Optically enabled RF phased-arrays for data transmission

Pending Publication Date: 2022-03-17
CALIFORNIA INST OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent describes a system that includes multiple components to modulate and deliver optical signals. The system includes a first optical modulator to modulate a first optical signal with a first data to generate a first modulated optical signal, a second optical modulator to modulate a second optical signal with a first clock signal to generate a second modulated optical signal, an optical multiplexer to multiplex the first and second optical signals to generate a multiplexed optical signal, and a demultiplexer to demultiplex the multiplexed optical signal to generate third and fourth optical signals. The system also includes a first amplifier to generate a second data in response to the first electrical current, a memory to store the second data, a second amplifier to generate a second clock signal in response to the second data, a multitude of adjustable delay elements to generate a delayed version of the second clock signal, and a multitude of transmit antennas to transmit the optical signals. The system can be integrated onto a monolithic photonic integrated circuit substrate. The technical effects of the system include improved signal delivery and more efficient use of optical resources.

Problems solved by technology

However, as a phased array's size increases, the distribution of the high-speed data to the elements of the phased array poses challenges in complexity, cost, power consumptions, size, mass, and the like.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optically enabled RF phased-arrays for data transmission
  • Optically enabled RF phased-arrays for data transmission
  • Optically enabled RF phased-arrays for data transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030]In accordance with one embodiment of the present disclosure, an optical signal distributes any combination of data, timing reference, and / or control / housekeeping signals thereby enabling independent operation of various blocks of an IC or multiple ICs. Such an IC(s) may include a phased array or any other type of electronic system. Therefore, other than the optical signal that is generated in accordance with embodiments of the present disclosure, no reference timing signal, and / or data needs to be distributed across the electronic system.

[0031]When used in a phased array, embodiments of the present disclosure substantially simplify the construction and / or scaling of the array to larger dimensions, while concurrently lowering the cost and the power consumption of the system. Embodiments of the present disclosure also lower the mass, size, and complexity of the system as light-weight optical fibers, described further below, eliminate the relatively massive and complex metal impe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A system includes, in part, a first optical modulator adapted to modulate a first optical signal with a first data to generate a first modulated optical signal, a second optical modulator adapted to modulate a second optical signal with a first clock signal to generate a second modulated optical signal, an optical multiplexer adapted to multiplex the first and second optical signals to generate a multiplexed optical signal, and an optical fiber adapted to carry the multiplexed optical signal. The second optical signal has a second wavelength that is different from the first wavelength.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application claims benefit under 35 USC 119(e) of U.S. Application Ser. No. 63 / 078,817, filed Sep. 15, 2020, and U.S. Application Ser. No. 63 / 104,948, filed Oct. 23, 2020, the contents of both of which are incorporated herein by reference in their entirety.FIELD OF THE INVENTION[0002]The present invention relates to data, clock and control signal transmission, and more particularly to such transmission using opto-electronic devices.BACKGROUND OF THE INVENTION[0003]RF and mm-wave phased arrays are being increasingly used in the next generation of wireless communication networks. As is known, phased array advantages increase with increasing span (size) and the number of elements disposed in the phased array. This is, in part, due to the fact that the gain, effective isotropic radiated power (EIRP), and the electronics beamforming and beam-steering capabilities of a phased array scale favorably as the number of transmit elements ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B10/25H04B10/54H04L7/00H04B10/69
CPCH04B10/25H04B10/69H04L7/0075H04B10/541H04L7/0008G06F1/105H04B2210/006H04B10/25752
InventorHIJIMIRI, SEYED ALI
OwnerCALIFORNIA INST OF TECH